# Distance from Necochea (NEC) to St Louis (STL)

> 9,172 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,172 km / 5,699 mi / 4,952 nm
- **Estimated flight time**: 12h
- **Heading**: 336° (north northwest)
- **Return heading**: 156° (south southeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Argentina) → United States
- **Intercontinental**: South America → North America
- **Time difference**: -2h (When it's 09:36 in Necochea, it's 07:36 in St Louis)
- **Elevation difference**: 545 ft (STL is higher than NEC)

## Airports

### [Necochea Airport (NEC)](https://www.flightduration.online/airport/nec-necochea-necochea-airport/1ef266df-9374-6df2-8aed-06bb2780ed98)

- City: Necochea, Argentina
- ICAO: SAZO
- Timezone: America/Argentina/Buenos_Aires
- Coordinates: -38.480000, -58.820000
- Elevation: 72 ft

### [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)

- City: St Louis, United States
- ICAO: KSTL
- Timezone: America/Chicago
- Coordinates: 38.750000, -90.370000
- Elevation: 617 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 09:36 in Necochea, it's 07:36 in St Louis.

## Related

- [Necochea Airport (NEC)](https://www.flightduration.online/airport/nec-necochea-necochea-airport/1ef266df-9374-6df2-8aed-06bb2780ed98)
- [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)
- [Flight duration calculator](/#calculator)